The former Olympique de Marseille boss believes the Arsenal player has no weaknesses following his match-winning performance in the qualification victory in Helsinki
The Arsenal midfielder broke beyond Karim Benzema in the 20th minute of the match and latched on to an inch-perfect pass from the striker before steering his shot across Lukas Hradecky and into the net.
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"I do not need to be reassured by Diaby," Deschamps told reporters.
"I saw him play at Arsenal. Obviously he has a lot of qualities. This is a complete midfielder, able to do everything, including scoring. Of course I prefer to have him at my disposal."Diaby himself says he is glad to be back in the fold for the Gunners and France.
He told M6: "I am happy to be back. The match ended with a victory, it's a big satisfaction.
"The key is to give the best of yourself in every game."And the 26-year-old says he has put his injury woes behind him and is only looking towards the future.
"It's been a long time that I have been out of this team," he said to reporters.
"I'm happy, especially because we won. The past is the past, now we must look to the future [regarding injury problems]. Am I essential [to this team]? The most important thing is to give the best of myself in every game."